Differentiation of two forms of GPIb functionning as receptors for α-thrombin and von Willebrand factor: Ca2+ responses of proteases treated human platelets activated with α-thrombin and the tethered ligand peptide - Greco, NJ; Jones, GD; Tandon, NN; Kornhauser, R; Jackson, B; Jamieson, GA (Biochemitry, 1996)